This Power Point was created to help kids with double digit subtraction by breaking into 4 easy steps with the help of some zoo friends. Step 1 is the Inspector who decides if the problem can be worked out the way that it is. Step 2 is the Regrouper who regroups the problem. Step 3 is the Subtractor who subtracts the problem, and Step 4 is the checker who checks the problem. I found that when I taught these four steps separately using these friendly characters, my students rarely made mistakes in their double digit subtracting. All I have to do is remind them to do their 4 steps. My kids love it!